Nicaraguan Billboard: "Compañeros en el sacrificio"

The sign above the billboard reads: "La marcha hacia la victoria del pueblo nadie la detendra El Salvador triunfara. C. N. S. P." The billboard reads: "Avenida: Inmolacion Patriotica 18 de Mayo. Morir por la patria, es vivir : eternamente. Compañeros en el sacrificio." Below are four names and images of men, including Edwin Castro Rodríguez, Ausberto Narváez Parajón, Cornelio Silva Argüello, Rigoberto López Pérez. The first three men were assassinated in prison by the Somoza regime for their participation in the Sept. 21, 1956 bombing. Here is a newspaper article from El Nuevo Diario covering their deaths: http://www.elnuevodiario.com.ni/especiales/74502-dia-hienas-carceles-aviacion/ Rigoberto López Pérez was a Nicaraguan poet, artist, and writer who assassinated President Anastasio "Tacho" Somoza García in the Sept. 21, 1956 bombing but was instantly killed afterward. Somoza's son, Luis Somoza Debayle, became president shortly after.  To the right of the men is a quote by Edwin Castro Rodríguez: "Mañana hijo mio todo sera distinto se marchará la angustia por la puerta del Fondo que han de cerrar para siempre las manos de hombres nuevos." The English translation is: "Tomorrow, my son, everything will be different, anguish is going through the back door, which the hands of new men will close forever." Archived by Leah Williams. Photographed by Professor David Schwartz, Albright College, 1981.